public class Test1 {
    public static void main(String[] args) {
        editDistance("owkkyhiddq","scdx");
    }
    public static int editDistance (String str1, String str2) {
        // write code here
        int m = str1.length();
        int n = str2.length();

        int[][] dp = new int[m + 1][n + 1];
        for(int i = 0; i <= m; i++) {
            dp[i][0] = i;
        }
        for(int j = 0; j <= n; j++) {
            dp[0][j] = j;
        }
        for(int i = 1; i <= m; i++) {
            for(int j = 1; j <= n; j++) {
                if(str1.charAt(i - 1) == str2.charAt(j - 1)) {
                    dp[i][j] = dp[i - 1][j - 1];
                }else {
                    if(i < j) {
                        dp[i][j] = dp[i][j - 1] + 1;
                    } else if(i > j) {
                        dp[i][j] = dp[i - 1][j] + 1;
                    } else {
                        dp[i][j] = dp[i - 1][j - 1] + 1;
                    }

                }
            }
        }
        return dp[m][n];
    }
}
